linux-kernel - [RFC 3/4] Input: Ignore the KEY_POWER events if hibernation is in progress

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20251018142114.897445-4-usama.anjum@collabora.com>
Date: Sat, 18 Oct 2025 19:21:06 +0500
From: Muhammad Usama Anjum <usama.anjum@...labora.com>
To: "Rafael J. Wysocki" <rafael@...nel.org>,
	Len Brown <lenb@...nel.org>,
	Pavel Machek <pavel@...nel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Danilo Krummrich <dakr@...nel.org>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Peter Zijlstra <peterz@...radead.org>,
	linux-acpi@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-pm@...r.kernel.org,
	linux-input@...r.kernel.org
Cc: Muhammad Usama Anjum <usama.anjum@...labora.com>,
	kernel@...labora.com,
	superm1@...nel.org
Subject: [RFC 3/4] Input: Ignore the KEY_POWER events if hibernation is in progress

Serio drivers call input_handle_event(). Although the serio drivers have
duplicate events, they have separate code path and call
input_handle_event(). Ignore the KEY_POWER such that this event isn't
sent to the userspace if hibernation is in progress.

Abort the hibernation by calling pm awake API as well.

Without this, the event is sent to the userspace and it suspends the
device after hibernation cancellation.

Signed-off-by: Muhammad Usama Anjum <usama.anjum@...labora.com>
---
 drivers/input/input.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/input/input.c b/drivers/input/input.c
index a500e1e276c21..0979f18aae6a2 100644
--- a/drivers/input/input.c
+++ b/drivers/input/input.c
@@ -26,6 +26,7 @@
 #include <linux/kstrtox.h>
 #include <linux/mutex.h>
 #include <linux/rcupdate.h>
+#include <linux/suspend.h>
 #include "input-compat.h"
 #include "input-core-private.h"
 #include "input-poller.h"
@@ -362,6 +363,11 @@ void input_handle_event(struct input_dev *dev,
 
 	lockdep_assert_held(&dev->event_lock);
 
+	if (code == KEY_POWER && hibernation_in_progress()) {
+		pm_wakeup_dev_event(&dev->dev, 0, true);
+		return;
+	}
+
 	disposition = input_get_disposition(dev, type, code, &value);
 	if (disposition != INPUT_IGNORE_EVENT) {
 		if (type != EV_SYN)
-- 
2.47.3